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18.1.4.1 What is New in NDB Cluster 7.3

The following improvements to NDB Cluster have been made in NDB Cluster 7.3:

  • Based on MySQL Server 5.6.  NDB Cluster 7.3 is based on MySQL Server 5.6, so that NDB Cluster users can benefit from MySQL 5.6's improvements in scalability and performance monitoring. As with MySQL 5.6, NDB Cluster 7.3 uses CMake for configuring and building from source. For more information about changes and improvements in MySQL 5.6, see Section 1.3, “What Is New in MySQL 5.6”.

  • Foreign keys.  Tables created using the NDB storage engine version 7.3.0 and later provide support for foreign key constraints. (This includes all NDB Cluster 7.3 releases.) For general information about how MySQL 5.6 and NDB Cluster 7.3 handle foreign keys, see Section 1.7.3.2, “FOREIGN KEY Constraints”. For syntax and related information, see Section 13.1.17, “CREATE TABLE Statement”, and Section 13.1.17.5, “FOREIGN KEY Constraints”.

  • Node.js support.  NDB Cluster 7.3 also supports applications written in JavaScript using Node.js. The MySQL Connector for JavaScript includes adapters for direct access to the NDB storage engine and as well as for the MySQL Server. Applications using this Connector are typically event-driven and use a domain object model similar in many ways to that employed by ClusterJ. For more information, see MySQL NoSQL Connector for JavaScript.

  • End of ClusterJPA support.  ClusterJPA is no longer supported beginning with NDB 7.3.18; its source code and binary have been removed from the NDB Cluster distribution.

  • ndb_restore—NDBT dependency removal.  The dependency of ndb_restore on the NDBT library has been removed as of NDB 7.3.25. This library is used internally for development, and is not required for normal use; its inclusion in this program could lead to unwanted issues when testing.

    The principal effect of this change for users is that ndb_restore no longer prints NDBT_ProgramExit - status following completion of a run. Applications that depend upon such behavior should be updated to reflect the change when upgrading.

  • Auto-Installer deprecation and removal.  The MySQL NDB Cluster Auto-Installer web-based installation tool (ndb_setup.py) is deprecated in NDB 7.3.31, and is removed in NDB 7.3.32 and later. It is no longer supported.

  • ndbmemcache deprecation and removal.  ndbmemcache is no longer supported. ndbmemcache has been deprecated beginning with NDB 7.3.31, and is scheduled for removal in NDB 7.3.32.

  • Node.js support removed.  Beginning with the NDB Cluster 7.3.31 release, support for Node.js by NDB 7.3 has been removed.

    Support for Node.js by NDB Cluster is maintained in NDB 8.0 only.

NDB Cluster 7.3 is also supported by MySQL Cluster Manager, which provides an advanced command-line interface that can simplify many complex NDB Cluster management tasks. See MySQL™ Cluster Manager 1.4.8 User Manual, for more information.